Loom and method of operation



1955 J. L. RAMER ET AL LOOM AND METHOD OF OPERATION 6 Sheets-Sheet 1 Filed June 7, 1952 INVENTOR JOHN L.RAMER CARL MOLANDER FIG-2A BYM- i ATTORNEYS Nov. 22, 1955 J. RAMER ETAL LOOM AND METHOD OF OPERATION 6 Sheets-Sheet 2 Filed June 7, 1952 INVENTOR JOHN L RAMER CARL MOLANDER BYTiAawirzzn- ATTORNEYS NOV. 1955 J. 1.. RAMER ET AL 2,724,414

LOOM AND METHOD OF OPERATION Filed June 7, 1952 6 Sheets-Sheet 3 INVENTOR JOHN L. RAMEIR BBEBEEEE V- 22, 1955 J. RAMER ET AL LOOM AND METHOD OF OPERATION 8 Sheets-Sheet 4 Filed June 7, 1952 EWE WE 120 PICKS 12 PICKS 4a PICKS I44 PICKS cues) 3090 PICKS a l l l l l F l l l l a 3 |lll1|||l|l|P|l|||||l||P||| bullldhl lllllll I I O 4 a u 1. I! I J 1) h 3 w MUM". Hm I I m I I I lfllll l1". u W E i M mm Mun T 1 l w n A 6 I HF w W mi. in F fl h u d C r r r L m x F m mmymrmmwymm FIG-l8 Dmecnou or MOVEMENT OF FRBRIC THROUGH Loom FIG-IO FIG-ll R O T N E V m JOHN L. RAMER CARL MOLANDEIR BY fi ATTORNEIS FIG-9 22, 1955 J. L. RAMER ET AL LOOM AND METHOD OF OPERATION 6 Sheets-Sheet 5 Filed June 7, 1952 INVENTOR m. m A A L 0 M NL HR 0A C 5 G El BY mi ma.

ATTORNEYS V- 1955 J. L. RAMER ET AL LOOM AND METHOD OF OPERATION 6 Sheets-Sheet 6 Filed June '7, 1952 mwzmwz lmml FIG-l6 INVENTOlR JOHN L. RAMER CARL MOLANDIE R BY W ma ATIQRNEYS 2,724,414 Patented Nov. 22, 1955 Un ed States Patent Ofiice a.

LOOM AND METHOD OF OPERATION John L. Rainer and CarliG. Molander, Piqua, Ohio, as-

signors to The Orr Felt and Blanket Company, Piqua, Ohio, a corporation of Ohio Application June 7, 1952, Serial No. 292,302

8 Claims. (Cl. 139-77) This invention relates to looms, particularly to a new and novel control for the harness motion of a loom so as to produce a particular type of woven product. i More particularly still, this invention relates to a loom for the production of a woven product which is characterized by the novel feature of effecting a pattern change in the weave of the article being produced at predetermined spaced points therealong.

In application Serial Number 283,912 filed April 23, 1952, in the names ofKeily and Smith, and which application is assigned to the same assignee as the instant application, there is disclosed a woven product which consists of a blanket especially adapted for having incorporated therewith an electric heating element to provide for an electrically heated blanket, and which, in itself, comprises a known article of commerce. The previously filed application referred to discloses a blanket of the double ply type characterized in having spaced lines of binding of the plies extending therealong to provide for channels for receiving the electric heating element. The present invention relates to a loom modified in such a inanner as to weave a blanket of the nature disclosed in the said pending application.

in general, the present invention has for its particular object, the provision of a loom, and a method of operating the same, which will produce a two ply blanket having integrally woven therein channels for receiving an electric heating element, so that after the blanket comes from the loom it needs only have the usual washing, dyeing, and napping operations performed thereon, the electric heating element incorporated therewith, and binding placed across the ends in order to produce a finished product.

Another particular object of the present invention is the provision of a loom in which the weaving pattern of the loom will change at predetermined points along the article being produced in the loom.

Another object of this invention is the provision of a loom having a harness chain for controlling the harness motion of the loom. in order to produce a given pattern, and in which there is provided an arrangement for overriding the control imparted by the harness chain to provide certain definite pattern changes along the article being produced on the loom.

A still further object of this invention is to provide a loom which is generally of the ordinary type to the extent of utilizing a harness chain for controlling the harness motion, but in which pattern variations can be introduced of the general nature of those that have heretofore been provided by a Jacquard attachment, but wherein the harness motion is absolutely positive at all times as contrasted to the relatively irnpositive action of the Jacquard attachment.

Another particular object of the present invention is the provision of a control for a loom which makes the loom highly flexible in that pattern changes can be introduced at any selected points along the length of the article being produced in the loom. i

Still another object of this invention is the provision of a method of operating a loom in order to produce a woven article characterized by having different types of weave therealong in diiferent zones along the length of the woven product.

A still further object of this invention is the provision of a method of controlling the harness motion of a loom in order to produce a woven article of substantial length but which consists of different zones along the length of the article which are woven according to different determined patterns.

A particular object of this invention is the provision of a loom which will produce an article of substantial length and which has a plurality of diiferent types of weave or different weaving patterns arranged in zones along the length or warp of the article, and which utilizes ed for having incorporated therewith the control means of this invention to be operated in accordance with the method of this invention;

Figure 2 is a plan view diagrammatically illustrating one type of woven product adapted for being produced on the loom of this invention;

Figure 2A is an end view of the blanket, somewhat exaggerated as to certain dimensions to show the channels and lines of binding;

Figure 3 is a perspective view showing a portion of the operating mechanism of the loom according to this invention;

Figure 3A is a fragmentary view showing the drive to the harness chain of the loom;

Figure 4 is a more or less diagrammatic view showing the heddles and heddle frames of the machine with 'the warp threads leading ofi thewarp beam extending therethrough;

Figure 5 is a more or less diagrammatic view showing a typical heddle frame and its connections with the jack by means of which it is raised and lowered, andthe vibrator mechanism which operates the jack with the heddle frame in its uppermost position;

Figure 6 is a view like Figure 5, but showing the heddle frame in its lowered position;

Figure 7 is a viewshowing a cross connection according to the present invention between certain of the vibrator levers of the vibrators associated with the several heddle frames of the loom and certain auxiliary levers by means of which the action of the vibrator levers is controlled separately and independently from the regular harness chain of the machine;

Figure 8 is a more or less diagrammatic view of that portion of the woven article in Figure 2 surrounded by the dot-dash circle numbered 8 and illustrating the weave in that part of the blanket;

Figure 9 is a section indicated by line 9-9 on Figure 8, showing the conventional weave along the article being produced where the two plies are entirely separate;

Figure 10 is a view indicated by line ll0-10 on Figure 8, showing the manner in which the two plies of the woven article are bound together;

Figure 11 is a sectional view indicated by line 11-11 on Figure 8, showing another part of the woven article; Figure 12 is a perspective view showing a portion of the mechanism forming a part of the controls accordin to this invention;

Figure 13 is a view similar to Figure 12, but showing the mechanism somewhat more in detail;

pre-

Figure 14 is a perspective view looking from the opposite direction, showing a part of the mechanism;

Figure 15 is a view like Figure 14, but showing still more of the mechanism;

Figure 16 is a plan view looking down on the regular or basic harness chain of the loom and showing one-half the length of the basic harness chain;

.Figure 17 is a view similar to Figure 16 but showing the entire length of an auxiliary pattern chain that. is

employed according to the teachings of this invention for modifying the weaving pattern that would normally be established by the regular harness chain; Figure 18 is a view of the reversing chain which controls the operation of the auxiliary pattern chain of Figure 17.

General arrangement I a A loom constructed in accordance with our invention and adapted for operating according to the method of our invention comprises a more or less standard loom to the extent that the harness motion of the loorn is controlled by a conventional harness chain operating through vibrators to effect movement of the jacks connected with the harness frames.

According to our invention, the harness chain of the loom establishes a basic pattern which continues throughout the length of the product woven in the loom. The present invention provides for varying the basic pattern by means of an auxiliary pattern chain separate and independent from the regular harness chain and which operates'to provide an overriding control on certain ones of the vibrators that are normally controlled by the regular harness chain. v i V This auxiliary pattern chain is made up in sections and is' arranged to oscillate back and forth between predetermined limits at opposite ends of the said'sections during the period that the said sections are effective. When a pattern change is to be effected, the auxiliary chain moves up to a new section and oscillates back and forth over the said new section during the interval that the pattern'change is to be effective and thereafter, moves to a new section for a still further pattern change, and so on, until the auxiliary pattern chain has completed an entire cycle during which an entire workpiece has been produced in the loom.

The control-of the movement of the auxiliary pattern chain from one section to another is controlled by still another chain, which can be referred to as a reversing chain, and which is arranged to index one space each time the auxiliary pattern chain reaches the end of the section over which it is oscillating, and by means of reversing cams, to determine whether the auxiliary pattern chain, if moving in the forward direction will continue in the same direction to carry it into a new section, or reverse in order again to transverse the same section as on the last movement.

The control of the loom in the manner described and the integration of the operation of the main or regular harness chain, the auxiliary pattern chain, and the reversing chain will be described in more detail in the following pages.

Description of the article to be produced The particular article to be produced in the loom of the present invention is more fully disclosed in the copending application in the names of Keily and Smith referred to above, but, briefly, consists of a two ply blanket in which is to be placed an electric heating elegether at the time of weaving along lines spaced across r 4 the width or weft of the blanket and extending along the en h 9 n he di e t no e wa p t These lines of binding are provided by carrying through the blanket additional threads running along the warp and entirely separate and independent from the regular warp threads of the blanket, and which additional and independent threads are referred to as warp binders. These warp binders are arranged in groups, for example, six in each group, with a group extending along each line where the two plies in the blanket are bound together. These warp binders have a normal position between the two plies, but where the plies are to be bound together, each of the warp binders is interwoven first with one of the plies and then with the other, at every third pick along the blanket. Since each warp binder will be interwoven with first one ply and then the other, the warp binder will be interwoven with one ply at every sixth pick along the line of binding with the point of interweave with the other ply falling halfway between.

Alternate of the warp binders follow opposite paths, so that at the point where the three alternate of the warp binders are interwoven with one ply, the other three warp binders will be interwoven with the opposite ply.

At the ends of the lines of binding, the warp binders are each carried in one only of the plies by being interwoven therewith at every third pick therealong. The binders are preferably separated, so that three thereof in any one group are carired in one ply beyond the end or" the pertaining line of binding, while the other three are carried in the other ply.

The result of weaving a blanket in the manner described is to provide for integral channels in the blanket as it comes from the loom so that no work whatsoever is required on the blanket in order to provide channels for receiving the electric heating element. The weaving of the blanket is not retarded in any way whatsoever and the appearance of the blanket is likewise not detracted from, nor its strength in any way impaired by the forming therein of channels in accordance with the present invention.

Specific example of article produced in loom By way of example of the nature of the product produced in a loom according to the present invention, reference may be made to Figures 2, 2A, 8, 9, 10, 11. in Figure 2, there is illustrated a two ply fabric blanket at 1.0, and which will be seen to have extending therealong, as indicated by the reference numeral 12, lines of binding where the two separate plies of the blanket are bound together. These lines of binding are of various types, and those at the extreme side edges of the blanket, indicated by reference numeral 14, may be referred to as the selvedge binding and extend from end to end of the blanket. The selvedge binding may be provided for by any number of warp binders desired, and the binding together of the plies along the selvedge takes place according to a regular and fixed pattern of the nature referred to above.

The lines of binding indicated at 16, and which are spaced inwardly from the side edges of the blanket, also extend from end to end of the blanket and are formed by the same weaving pattern as are the lines of binding along the selvedge of the blanket.

, group of lines of binding, indicated at 18, and which commence from a point spaced inwardly a predetermined distance from the head end or right end of the blanket in Figure 2, and extend toward a terminal point spaced inwardly from the foot end of the blanket at the left side of Figure 2. The lines of binding 18 comprise every other line of binding across the width of the blanket.

Intermediate the lines of binding 18 are the lines of binding 20 which commence at a point farther inwardly from the head end of the blanket than do the lines of binding 18, andwhich terminate at points nearer the foot end of the blanket than do the lines of binding 18. It will be apparent that the lines of binding 18 and 20 establish a tortuous passage in the blanket through which the electric heating element can be threaded. The lines of binding marked 20 are again picked up for a short distance, as indicated by reference numeral 22, adjacent the foot end of the blanket in order to provide for a transversely extending channel 24 in the blanket through which .the lead-in wires to the electric heating element can run transversely.

In the illustrated arrangement, the heating element is placed in the channels that lie between the lines of binding 16, and thepurpose of extending the lines of binding 16 completely to the ends of the blanket is so the workmen who are to install the electric element will have a ready means to determine the first channel that is to be employed.

The blanket illustrated in Figures 2 and 2A is a single blanket and a double blanket can be produced in substantially the same manner, except that the through or continuous lines of binding 16 in a double blanket are somewhat nearer the side edges of the blanket, and at the very center of the blanket one of the lines of binding is eliminated in order to provide for a double width channel. In other respects, except for dimensions, the double blanket is the same as the single blanket illustrated.

The nature of the weave of the blanket and the paths followed by the warp binders referred to will be more readily apparent upon reference to Figures 8 through 11.

In Figure 8, the filler or weft threads of the blanket are indicated by the reference numeral 26, and the regular warp threads are indicated by reference numeral 28. The warp binders are indicated in solid lines in Figures 8, 10, and 11, and bear the reference numeral 30.

In Figure 9, the section illustrated is taken through the blanket to one side of one of the lines of binding and illustrates that, under normal circumstances, the blanket is woven so as to have two separate and individual plies, the top ply being generally indicated by reference nuineral 32 and the bottom ply by reference numeral 34.

In Figure there is shown a sectional view, indicated a by line 1010on Figure 8, and which shows the path followed by one of the warp binders 30 at the end of a line of binding. In Figure 10 it will be noted that the warp'binder 30 illustrated therein is interwoven with the top ply 32 at 36 and with the bottom ply at 38 and then again with the top ply at 40. Progressing rightwardly in Figure 10, it will be noted that at every third pick therealong after the point 40 the warp binder is interwoven with the top ply.

Figure 11 illustrates the path of the warp binder next adjacent to the one illustrated in Figure 10, and it will be seen that at the place where the warp binder in Figure 10 is interwoven with the top ply, the warp binder in Figure 11 is interwoven with the bottom ply, as at points 42 and 44, whereas, where the warp binder in Figure 10 is interwoven with the bottom ply at point 38, the warp binder in Figure 11 is interwoven with the top ply at 46.

The alternate interweaving of the Warp binders first with one ply and then with the other continues throughout the length of any zone of binding, with adjacent warp binders being woven with respectively opposite plies at any one point of interweaving.

In Figure 11 it will further be noted that rightwardly of the point of interweave at 44 of the warp binder with the lower ply, the said warp binder is interwoven at every third pick with the said lower ply of the blanket. It

will be apparent that any group of warp binders, then, has half thereof carried in one ply of the blanket beyond the end of the line of binding, and the other half thereof carried in the opposite ply ,of the blanket. This makes both plies of the blanket uniform and prevents puckering and pulling thereof.

The weaving of the warp binders with two plies along the selvedges and also along the lines of binding 16 follows the pattern illustrated in Figures 10 and 11, leftwardly of points 40 and 44 throughout the length of the blanket.

Construction of the Zoom Referring now to Figures 1, 3, 3A, and 4, a loom adapted for being constructed in accordance with our invention to be operated according to the method disclosed herein comprises the loomsides 50 at the head end of the loom and 52 at the plain end thereof, connected by suitable girts in order to make a rigid and integral structure. At the top there is preferably provided the arch 54 in which are mounted the sheaves 56 over which pass the harness wires leading to the harness or heddle frames.

At the back of the loom is a warp beam 58 on which are wound the warp threads and the warp binders referred to. The warp threads and the warp binders, which have been identified by numerals 28 and 30, lead from the warp beam through the heddles 59 mounted in the heddle frames or harness frames 60, as illustrated in Figure 4. It will be understood that each warp thread and each warp binder is led through one and only one heddle of one heddle frame, according to practices well known in the art.

Each of the heddle frames is connected with a corresponding jack 61 adapted for oscillation about a supporting shaft 62 for raising and lowering the pertaining heddle frame, and associated with each jack is a vibrator mechanism, and which vibrator mechanism is adapted for being controlled by harness chain 64. The harness chain 64 comprises a plurality of transverse bars on which are mounted cams or risers that regulate the operation of the vibrator mechanisms for effecting movement of the jacks 61 so that the pertaining heddle frames will raise and lower in the loom at predetermined times, thereby to establish the shed through which the shuttle of the loom will lay the filler or weft thread. A space where a cam or riser is absent from the harness chain is known as a sinker.

Turning now to Figures 5 and 6, there is illustrated therein one of the heddle frames 60 with its associated jack 61 and the vibrator mechanism that controls the jack. The heddle frame 60 illustrated in Figures 5 and 6 is connected by the harness straps 66 with the harness wires 68 leading toopposite ends of the jack 61 and connected thereto by the jack eyes 70.

The jack 61 is rotatably mounted on its supporting shaft 62, as illustrated, and each jack is connected with a vibrator mechanism by means of a vibrator connector 72, which has one end pivotally connected with the jack, as at 74, and its other end pivotally connected at 76 with a vibrator gear 78. Vibrator gear 78 is rotatably mounted on its axis on the end of a vibrator lever 80, pivotally mounted on a supporting shaft 82. The underside of vibrator lever 80 has a pad 84 thereon adapted for engagement for the cams or risers 86 of the harness chain 64. When vibrator lever 80 is in an elevated position, as illustrated in Figure 5, vibrator gear 78 is pushed upwardly to the point where its teeth will be engaged by the teeth on the upper harness cylinder gear 88, which is rotating in the direction of the arrow, and which will turn the vibrator gear to the position illustrated, thereby to shift vibrator connector 72 rightwardly and cause jack 61 to rotate in a clockwise direction is illustrated in Figure 6, and this will carry the teeth of vibrator gear 78 into position to mesh with the teeth of the lower-harness cylinder gear 90, which is rotating in the direction indicated, and which will cause the vibrator gear 78 to turn counterclockwise, thereby to move vibrator connector 72 to the left, and thus cause jack 61 to rotate counterclockwise about its supporting shaft 62, thereby to lower the heddle frame to its lower position, as illustrated in Figure 6.

Turning now to Figures 3 and 3A, in these views there will be seen a drive motor 92 driving through a pinion 94 into a gear 96 mounted on the end of a crankshaft 98. A bottom shaft 100 is geared at its opposite ends to the crankshaft and is likewise geared at the right end of Figure 3; and which is the head end of the loom; to a vertical shaft 102 which carries thereon bevel gears 1% that mesh with bevel gears 106 on the shafts that support the previously referred to harness cylinder gears 88 and 90.

The crankshaft 98 is connected by the crank connections 108 with the beater which operates in the conventional manner.

It will be evident that the operation of the harness chain 64 must be synchronized with the rotation of the harness cylinder gears and with the beater of the loom, and because of this, the harness chain is geared to the shaft of the lower cylinder gear by the gearing identified by numerals 110 in Figure 3A. This gearing is so arranged that for each revolution of the cylinder gears, the harness chain will advance one bar.

From the foregoing, it will be evident that the loom as described would operate to produce a woven fabric having a repetitive pattern, as determined by the construction of the harness chain 64. It will also be evident that the harness chain 64 is relatively short, and that, therefore, the repetitive pattern would be of a fairly uniform nature, with the points of repetition closely spaced along the blanket. In the illustrated arrangement, the pattern would repeat every twelve picks along the blanket, counting the picks in both plies.

According to our invention, we provide a novel arrangement for varying the pattern by providing an overriding control for at least those ones of the vibrator levers which pertain to the heddle frames through which the warp binders are led.

At this point, reference to Figure 4 may be had, wherein it will be seen that the heddle frames are numbered from 1 to 14 reading from right to left. Of these heddle frames, numbers 9 through 12 are those through which the warp binders pertaining to the lines of binding 18, 20 and 22 are led; the heddle frames numbers 13 and 14 are those through which the warp binders pertaining to the selvedge lines of binding 14 and the through lines of binding 16 are led; and the heddle frames marked 1 through 8 are those through which the regular warp threads 28 are led.

Turning now to Figure 7, at the right side thereof are represented more or less diagrammatically the vibrator levers pertaining to the several heddle frames. These vibrator levers are numbered 1 through 14', reading from right to left, and each numbered vibrator lever pertains to the correspondingly numbered heddle frame. The vibrator levers 9' through 12', and which pertain to the heddle frames through which the warp binders for the lines of binding 18, 20, and 22 are led, have connected thereto the flexible connectors 1.2- which lead over the sheaves or pulleys 122 and 124 to the arms 126.

At this point, it will be evident that the vibrator levers 9' through 12' can rise and fall in accordance with the cam or riser pattern on the harness chain 64, as long as the arms 126 remain in theirflowered positions. However, a lifting of any one of the arms 126 will result in a lifting of the vibrator arm to which it is connected, and in this manner the apparent cam pattern or harness chain 64 can be varied at will by controlling the movement of the arms 126. This pattern variation will come at the points where arms 126 are moved to neutralize the sinkers on harness chain 64.

Overhead multiplier Referring to Figure 1, there is indicated at the left side of the view, mounted on top of the frame of the loom, an attachment identified generally by reference numeral 200, and which is known in the art as an overhead multiplier.

This device, as to the essential details thereof in connection with the presentinvention, is illustrated in more detail in Figures 12 through 15. The overhead multiplier is a device which, in itself, is a common loom attachment, but, heretofore, it has never been employed in the same manner as in connection with the present invention.

The particular nature of the manner in which the overhead multiplier mechanism operates to produce the desired results according to this invention will become more apparent in the following description.

In Figures 12 through 15, it will be noted that the overhead multiplier comprises a front frame 202 and rear frame 204, and between which is mounted a plurality of shafts. One of these shafts is indicated at 206 and comprises a shaft on which is mounted a plurality of pin wheels for driving star wheels mounted on a second shaft 208 arranged forwardly of shaft 206. Still another shaft 210 (Figure 15) is located somewhat rearwardly and beneath shaft 206, and carries a pin Wheel for driving one of the star wheels on shaft 208. A relatively short shaft 212, also best seen in Figure 15, extends through the front frame 202 and carries a single pin wheel.

In Figures 12 and 13, it will be seen that shaft 206 has connected therewith a gear 214 and that shaft 212 has connected therewith a gear 216. Gear 216 meshes with the gear 218 that is driven by the larger gear 220, which, in turn, is driven by a small gear 222. Gear 220 may advantageously be the gear mounted on the shaft which drives hardness chain 64, whereby movement of the harness chain is coordinated with rotation of the shafts in the overhead multiplier.

Gear 214 is caused to rotate in the opposite direction from gear 216 by virtue of an idler gear 224 interposed between gear 218 and gear 214. Shafts 208 and 210 have no gears thereon and are driven solely by the star wheels mounted thereon.

Shaft 212 carries a pin wheel 230 (Figure 15,) that is keyed to the shaft but is slidable thereon so that it can be moved into and out of operative alignment with the star wheel 232 fixed on shaft 210. Above pin wheel 230 is a pin wheel 234 mounted on shaft 206, and, therefore, rotating in the opposite direction to pin wheel 230. Pin wheel 234 is also keyed to the shaft on which it is mounted, but is slidable therealong. An angle lever 236 has portions engaging the shifting forks 231 and 235 for the pin wheels 230 and 234, respectively, and is movable for selectively engaging either one of the pin wheels While disengaging the other thereof. Angle lever 236 is adapted for being moved between its two operative positionsby connection 238 leading from one arm of the angle lever to an indicator lever 240. p i

Lever 240 is pivotally mounted on a supporting shaft 242 and has a forward portion 244 extending over the path of reversing chain 246 which passes around a supporting sprocket or bucket 2 48 that is rotatably mounted on shaft 208, and which has connected thereto a star wheel 2550 so that driving of the star wheel will also drive the sprocket or bucket 248 while shaft 208 can turn independently thereof. In a manner to be described hereinafter, the arrangement of the cams or risers on reversing chain 246 will determined whether indicator lever 240 is raised or lowered, and thus what direction of rotation will be imparted to shaft 210.

Shaft 210 has thereon a pin 'wheel 252 adapted for engagement with star wheel 254 that is fixed to s'haft 208.

drive from shaft 210 to shaft 208.

Pin wheel 252 and star wheel 254 provide for a one to one Shaft 208 has mounted thereon at the end opposite the reversing chain 246, a sprocket or chain cylinder 256 over which passes the auxiliary pattern chain to be described hereinafter.

The auxiliary pattern chain, as will become more apparent, comprises transverse bars having cams or risers thereon adapted for actuating the indicator levers 126 which have previously been described as being cross connected by flexible cables with the vibrator levers pertaining to the heddle frames through which the warp binders are led.

The auxiliary pattern chain also controls still another indicator lever 258 which has a link 260 connected thereto for actuating an angle lever 262 that operates through a shift rod 264 to movea pin wheel 266 into operative alignment with star wheel 250. Pin wheel 266 is carried on shaft 206 and thuswhenever the pin wheel is moved into operative alignment with the star wheel, the said star wheel andthe sprocket or chain guide 248 connected thereto will be driven. As will be seen hereinafter, the indicator lever 258 is only momentarilyshifted, so that the reversing chain 246 is driven in steps and indexes forwardly one bar each time pin wheel 266 engages star wheel250.

Harness chains Turning now to Figure 16, there is illustrated the regular harness chain 64 previously referred to. This harness chain comprises the interconnected link members 280 along the opposite sidesthereof and between which extend the bars 282 on which are mounted the cams or risers 284. As will be seen in Figure 16, the cams, or rather, the rows of cams, are numbered from 1 through 14, reading from left to right. These numbers correspond to the numbers that have been applied to the heddle frames and the vibrator levers pertaining thereto, and each row of numbered cams is effective for controlling the correspondingly numbered vibrator lever.

At each point along the harness chain where a cam or riser appears, the corresponding vibrator lever will be lifted, and this corresponds to a raised position of the corresponding heddle frame. On the other hand, at each point along the harness chain where a cam is missing from the bar, i. e.,where there is a sinker, a lowered position of the corresponding vibrator lever will obtain and this, of course, corresponds to a lowered position of the pertaining heddle frame.

In Figure 16 there is illustrated twelve bars of the twenty-four bar harness chain and the remaining twelve bars of the chain would correspond with the bars illustrated in Figure 16 to form the complete chain.

In order to still further correlate the illustration of the pattern chain with the weaving of the blanket, the bars of the pattern chain in Figure 16 bear the Roman reference numbers I through XII, reading from the bottom up. Considering that the harness chain moves downwardly into the loom as it is viewed in Figure 16, it will be apparent that the bars become effective for controlling the vibrators in the order in which they are numbered.

Turning now to Figures 9, l0, and 11, the woven product illustrated therein is to be considered as moving through the loom toward the left. This means that the weft or filler threads will be built up from left to right.

In order to match these views with Figure 16, the weft or filler threads have been numbered 1 through XII with Roman numerals corresponding to the numbers applied to the bars of the harness chain. Inasmuch as the basic pattern established by the harness chain repeats after twelve picks, the applied numerals run from I through XII, and then repeat.

A brief study of the cam pattern of the harness chain 64 as it is illustrated in Figure 16 will reveal that the rows of cams numbered 1 through 8 establish the pattern for the regular warp threads, as illustrated in Figure 10 9. The rows of cams numbered 13 and 14, and which pertain to the through lines of binding 16 and the selvedge lines of binding 14, establish a continuous pattern for their associated warp binders corresponding to the pattern illustrated at the left end of Figures 10 and 11.

The rows of cams numbered 9 through 12, and which pertain to the warp binders along the lines of binding 18, 20, and 22, establish a pattern for the warp binders which are led through frames 9 and 11, according to the left side of Figure 10, and a pattern for the warp binders which are led through the frames pertaining to the rows of cams numbered 10 and 12, according to the right side of Figure l l.

Thus, the warp binders pertaining to the heddle frames that are controlled by the rows of earns numbered 9 and 11 would provide for the binding together of the two plies if controlled only by the basic harness chain 64. On the other hand, the warp binders pertaining to the heddle frames controlled by the rows of cams marked 10 and 12 would be interwoven with only the lower ply of the blanket if controlled only by the basic harness chain 64.

It will also be evident that in order to offset the interweaving of the warp binders carried by the heddle frames pertaining to the rows of cams 9 and 11, where it is de sired to discontinue the line of binding, the interweaving of these warp binders with the lower ply must be eliminated, and this is accomplished by neutralizing the sinkers on the basic pattern chain at predetermined points therealong.

Further, it will also be evident, on reference to Figure 11, that, in order to provide for the interweaving of the warp binders pertaining to the heddle frames that are controlled by the rows of earns 10 and 12 on the basic harness chain with the top ply of the blanket, means must be provided for neutralizing the sinkers along the basic harness chain atpredetermined points therealong.

Thus, the control of the warp binders pertaining to the lines of binding I8, 20, and 22, as to whether these warp binders are interwoven with both plies of the blanket or only one thereof, is accomplished entirely by neutralizing sinkers along the basic harness chain 64. As explained previously, this neutralizing of the sinkers can be accomplished by lifting of the indicator levers 126 at the proper time, which, through their cross connection with the vibrator levers, will cause movement of the vibrator levers in the same manner as if the basic chain 64 included risers at that particular point.

It will further be apparent that, as to the heddle frames associated with the rows of cams 9 and 11 of the basic harness chain, the overriding control thereof takes place during the unbound section of the blanket, whereas the overriding control of the vibrator levers pertaining to the rows of cams marked 10 and 12 on the basic harness chain takes place along the bound section of the blanket.

Reference at this time to Figures 10 and. 11 will serve to make the foregoing clear. portion where the Warp binders are interwoven with both of the plies represents the basic pattern established by the harness chain 64, whereas the right side represents the pattern provided by the harness chain in combination with the auxiliary pattern chain along the unbound section of the blanket. The heavy arrows at the right side of Figure 10 indicate the points at which the auxiliary pattern chain is effective in overriding the basic harness chain.

In Figure 11, the reverse situation exists, and the right side of Figure 11 shows the path of the warp binder as established by the basic harness chain, and the left side of. the view shows the weaving pattern when the basic harness chain is overridden by the auxiliary pattern chain. InFigure 11, as in Figure 10, the heavy arrows indicate the points at which the auxiliary pattern chain effects the overriding of the basic harness chain 64.

It is to be noted that in both Figures 10 and 11, the points of override occur at the picks marked with the In Figure 10, the left-hand numerals IX and X, and which picks, as explained, correspond with the bars of harness chain 64 marked with the same Roman numerals IX and X.

. Turning now to the nature of the auxiliary harness chain, which has been referred to above, this is illustrated in detail in Figure 17. Figure 17 is a complete layout of the auxiliary pattern chain according to the present invention for the weaving of the particular workpiece illustrated.

The auxiliary pattern chain will be seen to comprise flexible chain-like side rails 300, between which extend the bars 302. The bars 302 provide for five rows on which cams or risers can be mounted and these rows are numbered l, 2, 3, 4, and R. The rows numbered 1, 2, 3, and 4 correspond to the rows of cams or risers numbered 9, 10, 11, 12 on the basic harness chain 64. The rows of cams or risers numbered 1, 2, 3, 4 on the auxiliary pattern chain pertain to the indicator levers 126 which are cross connected with the vibrator levers 9 through 12, as explained previously.

The rows of cams or risers marked R pertain to the indicator lever 258 which is connected for controlling shifting movements of pin wheel 266 into and out of engagement with star wheel 250, which is connected with chain guide 248 over which the reversing chain 246 extends. It will be apparent that each time one of the risers 304 in row R on the auxiliary pattern chain engages and lifts indicator lever 258, the pin wheel 266 will be shifted in a linkage 260, 262, and 264 into engagement with star wheel 250 to bring about movement of reversing chain 246 one bar in the forward direction,

This operative arrangement is availed of for bringing about oscillating movement of the auxiliary pattern chain between predetermined limits. This comes about because of the construction of the reversing chain, which is illustrated in Figure 18. In this view it will be noted that the reversing chain comprises the flexible side parts 320 between which extend the bars 322, and on some of which bars there are mounted the cams or risers 324. In general, along the reversing chain it will be found that a riser will alternate with a sinker, and because of this, on successive indexing movements of the reversing chain, the indicator lever 240 will first be raised and then lowered.

The two positions of indicator lever 240 correspond to opposite directions of rotation of shaft 210, and this, in turn, corresponds to opposite directions of rotation of the shaft 208, and it will be apparent that under these circumstances the auxiliary pattern chain of Figure 17 will oscillate between two adjacent of the risers 304 thereon. A lowered position of lever 240 corresponds to advancing movement of the auxiliary pattern chain, while a raised position corresponds to reverse movement thereof.

It will thus be apparent that the auxiliary pattern chain of Figure 17 can be caused to oscillate between two ad jacent of the cams 304 as many times as is desired, merely by arranging along the reversing chain as many alternating cams and sinkers as there is desired traversals of the auxiliary pattern chain. It will also be apparent that when it is desired to advance the auxiliary pattern chain in one and the same direction in order to carry it into a new section, this can be done merely by eliminating one of the risers on the reversing chain, so that there is, in that place, a sinker.

At this point, it will be appreciated that by the arrangement according to this invention, the basic harness chain, rather than containing one'bar for each pick along the article being woven over the entire length that pattern variations are encountered, is extremely short, and that the auxiliary pattern chain, due to the fact that it will oscillate back and forth over any predetermined section, can also be made relatively short. Further, the reversing chain, inasmuch a's it only indexes one bar forward at each point of reversalof the auxiliary pattern cha'm, is of arelatively short length. The woven product, however, can be made quite long, in the instant case, the length of areg ular bed blanket, and this, can be accomplished without the extremely long and bulky chains that would have to be applied in an ordinary chain controlled loom.

Referring again to the auxiliary pattern chain in Figure 17, this has been illustrated so the lowermost bar at the right side corresponds with the lowermost bar of the basic pattern chain illustrated in Figure 16. The drive to the two chains is such that the auxiliary pattern chain moves the distance of one bar whenever the basic pattern chain moves the distance of one bar, and thus it will, therefore, be evident that on the ninth bar of the basic pattern chain there will be an overriding control, due to the risers mounted on the ninth bar of the auxiliary pattern chain. N 7

Also, on the eighth bar of the auxiliary pattern chain there are risers which will effect an overriding control on the tenth bar of the basicpattern chain, due to the reversing of the auxiliary pattern chain after it reaches the ninth bar thereof. The auxiliary pattern chain also has risers at the tenth bar thereof, but these are only effective when the auxiliary pattern chain advances through the reversing cam.

It will also be noted in Figure 17 that on the ninth bar up, counting from the bottom bar at the right, is a re versing cam 304, and this will normally cause the auxiliary pattern chain to commence moving in the reverse direction, as referred to above. With the auxiliary pattern chain reversed, it is now moving in the opposite direction to the movement of the auxiliary pattern chain and will move six bars to the reversing cam 304 on bar lift. thereof and then again reverse so that by the time the next bar of the pattern chain on which an overriding control isto be exercised, namely, the next'bar marked with the Roman numeral IX, comes into eifective position, the cams on the ninth bar of the auxiliary pattern chain will again be in operative position, The auxiliary chain will then reverse, so that, when the basic pattern chain moves on to its tenth bar, the eighth bar of the auxiliary pattern chain will become effective to exercise an overriding control.

it will thus be seen that when the auxiliary pattern chain is moving downwardly, as it is viewed in Figure 17, the cams first on the ninth, and then on the eighth bars thereof will exercise the overriding control referred to, and, then, when the auxiliary pattern chain advances through the reversing cam on bar IX thereof, the cams mounted first on the ninth and then on the tenth bars thereof will effect the overriding control referred to.

in order to effect a comparison between the auxiliary pattern chain and the blanket, the various sections of the auxiliary pattern chain have been identified ,by capital letters A, B, C, and D, and the corresponding portions of the blanket have been indicated by the same reference characters. The blanket in Figure 2 is to be considered to be moving through the loom as indicated by the arrow, and for this reason, the weft or filler threads are built up therein from left to right.

The first section of the auxiliary pattern chain, marked A, thus corresponds to the tubular section of the blanket at the extreme left side of Figure 2, and wherein the two plies of the blanket are entirely unbound, except for the through lines of binding 14 and 16.

The first section marked B of the auxiliary pattern chain corresponds to that portion of the blanket in which only the lines of binding 22 appear; the next portion of the auxiliary pattern chain again marked A corresponds to that tubular portion of the blanket between the lines of binding 20 and 22; the next portion of the auxiliary chain marked B corresponds to that part of the blanket in which only the lines of binding 20 vappear.

The next section of the auxiliary pattern chain, and which'is marked C, corresponds to the long center section of the blanket, in which both the lines of binding 18 and 20 appear.

The next section of :the pattern chain is markedD, and

13 this corresponds to the section of the blanket in which only the lines of binding 18 appear.

At the extreme right end of the blanket in Figure 2, the blanket is again tubular, and thus the final section of the auxiliary pattern chain is again marked by reference character. A.

As will be seen in Figure 2, the various lettered sections of the blanket vary considerably in length, and this variation in length is accomplished by the arrangement of the reversing chain. Thus, for the first section A, at the right side of Figure 17, the auxiliary pattern chain traverses the section forty-seven times, and this corresponds to an arrangement on the reversing chain of twenty-three risers with intervening sinkers.

The next section 8, following the last-mentioned section A of the auxiliary pattern chain, is relatively short,

comprising only twenty-four picks along the blanket, and this is readily accomplished on the auxiliary pattern chain without the use of any reversing earns, merely by making this portion of the chain double-length, andpermitting the auxiliary pattern chain to advance therethrough.

in the next section marked A, the length of the zone is such as to require eleven traversals of that section of the auxiliary pattern chain, and this is accomplished by arranging on the reversing chain five risers with sinkers interposed therebetween.

The section marked B of the auxiliary pattern chain requires nineteen traversals to obtain the proper length blanket, and this is accomplished by nine risers on the reversing chain with intervening sinkers.

The next section of the auxiliary pattern chain, marked C, pertains to the long central portion of the blanket, and inasmuch as this portion of the blanket is extremely long, the section C on the auxiliary pattern chain is made double length so that only sixty-three risers with intervening sinkers are required on the reversing chain for the intermediate portion of the blanket to getone hundred and twenty-seven traversals of this section for a length along the blanket of three thousand and ninety picks.

The next section is marked D, and this requires twenty three traversals, so that thecorrespondingsection of the reversing chain comprises eleven risers with intervening sinkers. t

The final section marked A, which follows the section D just referred to, requires seven traversals, and this is accomplished by the use of three cams on the reversing chain with intervening sinkers.

It is, of course, understood that between each section along the reversing chain pertaining to any two consecutive sections along the auxiliary pattern chain, there is an arrangement of three consecutive sinkers, so that the auxiliary pattern chain will commence moving in the forward direction at the lower end of the section, then pass idly through the upper reversing cam pertaining to that section, and then pass through the lower reversing cam pertaining to the next section, and reverse only when it comes to the upper reversing cam pertaining to the new section of the auxiliary pattern chain that is to be employed for controlling the pattern.

The reversing chain described above is illustrated in Figure 18, with portions thereof broken out, but the various sections that pertain to the lettered sections of the auxiliary pattern chain bear corresponding letters, and, in addition thereto, the number of risers and intervening sinkers associated with each of the lettered sections is indicated in parentheses. The number of traversals of any given section of the auxiliary pattern chain is one more than the number of riser-sinker pairs indicated, be cause one complete traversal of any section is had before the first riser on that part of the reversing chain pertaining thereto is moved into effective position.

It will be noted that the first-described section B of the auxiliary pattern chain is not represented on the reversing chain, and this is due to the fact that this B Operation In operation, the loom is first set up with the warp beam filled, and before commencing operation, the basic chain 64 and the auxiliary pattern chain illustrated in Figure 17 are brought into proper alignment. This can be done by availing of the snap handles, indicated at 400 in Figures 12 and 13. By using these snap handles, the auxiliary pattern chain can be moved in one direction or the other to bring it into proper alignment with the basic chain and to thereafter remain locked together by virtue of their interconnecting gearing.

The position of the reversing chain is likewise adjusted so that it corresponds to the position of the auxiliary pattern chain, and with a sinker under lever 240, so the auxiliary chain will move in the advancing direction thereof.

The loom is now started in operation, and the basic and auxiliary chains Will advance in unison, i. e., downwardly, as viewed in Figures 16 and 17. On bar III of the auxiliary chain there is a reversing cam, but, the first time this bar moves under lever 258 to index the reversing chain one space, no reversing of the auxiliary pattern chain takes place, because another sinker on the reversing chain moves under lever 240.

At the point where the auxiliary pattern chain brings the risers on its ninth bar into alignment with the indicator levers 126, an overriding control will be had on the pertaining vibrator levers in the manner already described. The uppermost of the reversing cams 304, which is also mounted on the ninth bar of the auxiliary pattern chain, moves under indicator lever 258, and an indexing movement of the reversing chain in the amount of one more bar takes place.

At this time, the reversing chain moves a riser under indicator lever 240 so that the auxiliary pattern chain is reversed so the risers on bar VIII thereof move into posi tion to give an overriding control on bar X of the basic chain.

The auxiliary pattern chain continues to move in the reverse direction until the reversing riser on bar lll thereof comes underneath indicator lever 258, and this will bring about another indexing movement of the reversing chain. At this time, the reversing chain carries a sinker under its indicator lever 240, thus lowering the indicator lever and bringing about the shifting of the pin Wheels 230 and 234 in a manner to bring about reversing of the direction of rotation of shaft 210.

This, in turn, brings about reversing of shaft 208, and the auxiliary pattern chain commences moving in its advancing direction.

During the movement of the auxiliary chain in the advancing direction, the risers on the ninth and eighth bars thereof are effective, as described above, with the uppermost one of the reversing cams in that. section bringing about another advance of the reversing chain to the extent of one bar, and, at which time, the reversing chain presents a riser to its indicator lever 240, thereby bringing about raising of the said indicator lever, and

shifting of pin wheels 230 and 234 again to reverse the direction of rotation of shaft 210.

The auxiliary pattern chain then again commences moving in its reverse direction or downwardly, as viewed in Figure 17.

This oscillating of the auxiliary pattern chain back and forth between the two'reversing cams pertaining to the first section A at the right'side of Figure 17 continues until the reversingchain is advanced to the point where, instead of it bringing a riser beneath indicator. lever 240 when the upper of the reversing cams brings about an advancing movement 'of the indexing chains, it brings, instead, a sinker under indicator lever 240. Under these conditions, instead of the'auxiliary pattern chain again reversing and traversing section A still another time, it will continue moving downwardly into section B.

The auxiliary pattern chain passes through section B without reversal, and then proceeds to move into the second section indicated at A. The second section marked A corresponds exactly to the first section marked A, except as to the number of 'traversals of the auxiliary pattern chain.

After the auxiliary pattern chain has completed the required number of traversals of. the second section marked A, it then moves into the second section marked B. The second section marked B corresponds to the first section marked B, except that, where only one single traversal of the first B section is required, a plurality of traversals of the second section is required. Thevauxiliary chain thus oscillates the required number of times, and then moves into section C.

The section .C of the auxiliary pattern chain is that section pertaining to the elongated central portion of the blanket, and because of the number of traversals required in this section of the auxiliary pattern chain in order to weave the required length of the blanket, the said section C is made of double length, and this permits the pertaining section of the reversing chain to be made half as long as it would otherwise have to be.

After the auxiliary pattern chain has oscillated back and forth in the double-length section C as many times as necessary, it then moves downwardly into the section marked D and oscillates in this section for a predetermined iength of time, and then moves into the final section marked A.

In this final section A, the auxiliary pattern chain will make the required number of traversals as determined by the pertaining section of the reversing chain, and at the completion thereof, one complete blanket has been formed and the weaving of a new blanket can be commenced.

There is provided, as by means of a special riser on the auxiliary pattern chain which operates lever 402 pertaining to the box motion, means to insert a darkcolored weft thread at the end of the blanket, so that a ready indication is provided for cutting the Woven product to length. Lever 402 is connected for operating the shuttle box 404 by the straps, etc., indicated at 406 in Figure 3.

Normally, the loom is stopped when the weaving of a blanket has been completed, and the auxiliary pattern chain and. reversing chain are adjusted to the proper position relative to the main pattern chain before commencing the weaving of a new blanket. It will be understood that the blankets will be formed continuously and in one connected length for the entire length of the threads on the warp beam, and will not be cut into 1 separate blankets until after the product has been taken from the loom. At that time, the dark weft thread is availed of to determine the places where the blankets will be separated. 7

From the foregoing, it will be appreciated that what we have devised is a new loom arrangement and a method of operation thereof by means of which woven products can be obtained that heretofore could not be woven on the ordinary harness loom. By the practice of the present invention, substantially the same benefits will obtain that can be had by the use of a Jacquard attachment, but a definite improvement thereover exists in the fact that all of they loom movements are absolutely positive, thereby preventing dropped stitches and undesired pattern variations in the woven product.

It will also be evident that this invention can be practiced, not only on a loom of the nature illustrated, but also on a Dobby loom, or on any other type of loom wherein a movable pattern element controls the harness motion by means of levers or the like which can be subjected to an overriding control of the nature described.

It will also be evident that the particular type of weave illustrated is merely exemplary of many different patterns that can be set up in accordance with the teachings of this invention, and that the auxiliary pattern chain control need not necessarily control merely extra warp binder threads, but could control certain of the warp threads which it was desired to employ for imparting a characteristic pattern to the Woven product.

It will still further be noted that while we have described the particular blanket being woven as coming from the loom foot-end first, precisely the same basic pattern chain, the same auxiliary pattern chain, and the same reversing chain would be employed in case the blanket were to come from the loom head-end first.

Of particular importance in connection with this invention is the fact that the main or basic pattern chain, the auxiliary pattern chain, and the reversing chain are all of relatively short length, although the woven product is of considerable length.

It will be understood that this invention is susceptible to modification in order to adapt it to different usages and conditions, and, accordingly, it is desired to comprehend such modifications within this invention as may fall within the scope of the appended claims.

We claim:

1. In a loom of the nature described; a plurality of harness frames, a jack connected with each frame for effecting raising and lowering of the frames in the loom, a vibrator mechanism connected with each said jack and each vibrator mechanism including a vibrator lever, a basic pattern chain movable continuously in one direction beneath said levers and having cams thereon at selected points for actuating said levers, an auxiliary pattern chain also having cams thereon, other levers adapted for being actuated by the cams on said auxiliary pattern chain, and means comprising a cable over guide means connecting said other levers with certain ones of said vibrator levers for movement of the said vibrator levers independently of said basic pattern chain, the said cable comprising means to permit movement of the vibrator levers independently of the said other levers but which means positively moves said vibrator levers upon movement of the said other levers.

2. In a loom of the nature described; a plurality of harness frames, jacks connected with said harness frames, vibrator mechanisms connected with said jacks, each mechanism including a vibrator lever, a basic pattern chain for controlling the movements of said vibrator levers, other levers on the loom, an auxiliary pattern chain for controlling the movements of said other levers, and inextensible cables between said other levers and said vibrator levers and passing through a pulley sys tem whereby said vibrator levers can move independently of said other levers but movement of said other levers will bring about movement of the vibrator levers.

3. In a loom of the nature described; a plurality of harness frames, a jack connected with each frame, a vibrator mechanism connected with each jack and each said mechanism including a vibrator lever, a basic pattern chain movable beneath said vibrator levers, other levers mounted on the said loom, an auxiliary pattern chain movable beneath said other levers and a cable leading from the bottom of each of said other levers through guide means to the top of one of said vibrator levers whereby the vibrator levers can move independently of the said other lovers but movement of the sai,

other levers will cause movement of the said vibrator levers.

4. In a loom of the nature described; a plurality of harness frames, a jack connected with each frame, a vibrator mechanism connected with each jack and each said mechanism including a vibrator lever, a basic pattern chain movable continuously in one direction beneath said vibrator levers, other levers mounted on the said loom, an auxiliary pattern chain continuously and reversibly movable beneath said auxiliary levers, and a flexible inextensible connection leading from the bottom of each of said other levers to the top of one of said vibrator levers whereby the vibratorlevers can move independently of the said other levers but movement of the said other levers will cause movement of the said vibrator levers, there being pulley means beneath said other levers and above said vibrator levers for guiding the said flexible connections between the said levers.

5. In a loom; a plurality of harness frames, a jack connected to each frame, a vibrator mechanism for each jack including a vibrator lever, a basic pattern chain movable continuously in one direction beneath said vibrator levers and having cams to lift the levers and sinkers to permit the levers to drop, other levers on the loom, inextensible cables from the other levers through a pulley system to some of said vibrator levers so lifting of the other of the levers will also lift the connected vibrator levers, an auxiliary pattern chain continuously movable beneath the said other levers and also having risers and sinkers thereon, and means drivingly connecting said chains for movement in synchronism said means including means for periodically reversing the direction of movement of said auxiliary pattern chain. 1

6. In a loom; a plurality of harness frames, a jack connected to each frame, a vibrator mechanism for each jack including a vibrator lever, a basic pattern chain movable continuously in one direction beneath said vibrator levers and having cams to lift the levers and sinkers to permit the levers to drop, other levers on the loom, inextensible cables from the other levers through a pulley system to some of said vibrator levers so lifting of the other of the levers will also lift the connected vibrator levers, an auxiliarypattern chain movable continuouslybut reversibly beneath the said other levers and also having risers and sinkers thereon, means drivingly connecting said chains for movement in synchronism, said means including reversing means for reversingthe direction of movement of the auxiliary pattern chain, a control lever to control the reversing means, a reversing chain having risers and sinkers thereon to actuate the control lever, a normally disengaged indexing drive for said reversing chain, cam operated means to engage said indexing drive, and cams on the auxilary pattern chain to operate said cam operated 7. In a loom; a plurality of vibrator levers to control the harness frames of the loom, a basic pattern chain for controlling said levers normally operative during continuous movement in one direction to establish a repetitive pattern in the woven product, other levers on the loom, a cable from each said other lever through guide means to one of said vibrator levers so the vibrator levers can lift indipendently of the other levers but lifting of the other levers will cause lifting of the connected vibrator levers, an auxiliary pattern chain for actuating said other levers, said auxiliary pattern chain comprising earns thereon lifting the other levers and spaced to correspond to positions on the basic pattern chain said means causing periodic reversing of said auxiliary chain where cams are absent, and means for driving said chains in unison.

8. In a loom; a plurality of vibrator levers to control the harness frames of the loom, a basic pattern chain for controlling said levers normally operative during continu ous movement in one direction to establish a repetitive pattern in the woven product, other levers on the loom, a cable connection passing over pulley means from each said other lever to one of said vibrator levers so the vibrator levers can lift independently of the other levers but lifting of the other levers will cause lifting of the connected vibrator levers, an auxiliary pattern chain for actuating said other levers, said auxiliary pattern chain comprising a plurality of sections each consisting of cams for lifting the said other levers and spaced to correspond to positions on the basic pattern chain where cams are absent, and means continuously drivingly connecting said chains for movement in unison, said means including means for causing traversal of each section of the auxiliary pattern chain a predetermined number of times and then movement of the auxiliary chain into the next following section thereof.

References Cited in the file of this patent UNITED STATES PATENTS 700,999 Wyman et a1 May 27, 1902 855,102 Forbes et a1 May 28, 1907 1,357,967 Du Pray Nov. 9, 1920 1,691,156 Hussey et al Nov. 13, 1928 1,817,818 Hall Aug. 4, 1931 1,852,083 Jennings Apr. 5, 1932 1,997,286 Zimitz Apr. 9, 1935 2,020,445 Wattie Nov. 12, 1935 2,203,918 Moberg June 11, 1940 2,424,928 Glendinning July 29, 1947 2,491,388 Moberg Dec. 13, 1949 2,502,101 Morgan Mar. 28, 1950 2,563,579 Chapman Aug. 7, 1951 FOREIGN PATENTS 332,675 Great Britain July 31, 1930 

